Around this time, Cyril Power and Sybil Andrews began co-authoring prints together under the name ‘Andrew Power’. The ‘First Exhibition of British Lino-Cuts’ was mounted in June 1929 at The Redfern Gallery, London, and a series of exhibitions were then held annually at both The Redfern and The Ward Gallery. These attracted considerable interest, and commissions for Cyril Power`s and Andrew's work came in from The London Passenger Transport Board. Frank Pick, the Deputy Chairman of the Underground Electric Railways Company of London commissioned a series of posters. This series lead to further sporting posters and an interest in speed and movement in his work became evident.
In 1930, Cyril Power was elected member of the Royal Society of British Artists and established a studio with Sybil Andrews in Hammersmith close to the River Thames, a location which inspired many prints by both artists, most notably 'The Eight' by Cyril Power and 'Bringing in the Boat' by Sybil Andrews. Their first major joint exhibition was at the Redfern Gallery in 1933 which consisted of linocuts and monotypes. The following years saw many more joint exhibitions until the dissolution of their informal partnership in July 1938 when they gave up their studio.
In September 1939, at the outbreak of World War II, Cyril Power was attached to a Heavy Rescue Squad as a surveyor, based at Wandsworth Town Hall. He continued drawing and painting, tending to work principally in oils using a palette knife technique.
During the last year of his life, Cyril Power completed some eighty-nine oil paintings, a format he had grown increasingly fond of in the preceding years. These were mainly landscapes of the surrounding areas, often Helford River and the Falmouth area of Cornwall as well as some floral studies. He died in London in May 1951, aged seventy-eight.
Architecture was the subject of many of Cyril Power's linocuts, as well as speed, movement, modernity and the urban environment.
One of his favourite subjects was the London Underground, a symbol of the modern industrial age, and his print of the newly opened Bank Road Tube Station, 'The Tube Station', is one of his most celebrated works.
Works by Cyril Power are held in public collections around the world, including the British Museum, Auckland City Art Gallery, Fine Arts Museum of San Francisco, National Gallery of Australia, New York Public Library, Art Gallery of Ontario, National Art Gallery of New Zealand and London Transport Museum.